First land grant in the area made to Susannah Bowen. The property was subsequently used for dairying and resting paddocks for cattle. Three sawmills also operated at separate locations, miling Coachwood (Ceratopetalum apetalum), Sassafras (Doryphora sassafras) , and Brown Barrel (Eucalyptus fastigata). These species still dominate teh rainforest sections of the mountain.

1934

Property acquired by the French-born horticulturist, Alfred Brunet, and his Australian wife, Effie. The property was used as a cut-flower farm to supply Sydney florist, specialising in bulbs and other cool-climate plants. In the early 1950s, the Brunets proposed that their land at Mount Tomah should be donated to become an annex of the Royal Botanic Gardens.

1972

Land presented by the Brunets to the Royal Botanic Gardens Sydney.

1987

With State and Commonwealth Bicentennial funds for development, Mount Tomah Botanic Garden opens to the public (1 November).

2000

Over a million visitors to Mount Tomah Botanic Garden since opening

2011

The name of the Garden was changed to the Blue Mountains Botanic Garden Mount Tomah